Electric bell.



No. 654,531. 7 Patented My 24, I900.

c. aruneAsou.

ELECTRIC BELL.

(Application fllodoct. 9, 1899) (In lodal Unrrn PATENT tries,

CHARLES H. FURGASON, OF BINGHAMTON, NEW YORK, ASSIGNQR (DE ONE HALF TO ERIC PETERSON, OF SAME PLACE.

ELECTRIC BELL.

SPECIFICATION forming part of Letters Patent N 0. 654,531, dated July 24, 1900. Application filed October 2, 1899. Serial No. 732,426. (No model.)

To all whom it may concern.-

- Be it known that 1, CHARLES H. FURoAsoN, a citizen of the United States, residing at Binghamton,l3roome Oounty,NewYork,have invented certain new and useful Improvements in Electric Bells, of which the following is a specification.

My invention relates to improvements in electric bells for annunciators and call-bells; [O and the object of the invention is to provide a bell of simple construction in which the parts shall be readily accessible and one which when once properly set up will operate under varying strengths of current with- :5 out necessitating any further adjustment.

My invention is illustrated in the accompanying drawings, in which Figure 1 is aside elevation of the bell. Fig. 2 is a similar View at right angles to Fig. 1. Fig. 3 is a view of a modification.

In the drawings, A represents the support or casing to which the bell is to be secured. B is a frame of L shape which carries the operating parts of the bell and which has open-' 2 5 ings for the passage of screws Z for securing the frame to the casing. Upon one arm of this frame are mounted the electromagnets G O of the usual form. L-shaped frame has a post D, forming an ex- 0 tension of or secured to the frame 13. On the extremity of this post is secured the gong or bell P, preferably by means of a screw d. Within an opening 13 is pivoted the armature E, which has an extension E, carrying the clapper of the bell.

The frame B carries an insulated bindingpost, and a spring-contact F is riveted or otherwise secured to the armature and coacts with said contact. 'lhespring-c011tact is ex- 40 tended at right angles to the armature over the end thereof, as shown at F, and bears against the end of the frame, as shown at f, at a slight angle thereto. From the relation of the parts it will thus be seen that as the armature is attracted by the magnets the spring end will be bent, thus tending to throw the armature outward again as soon as the magnets are denergized, and I have found that by having the spring formed or bent in this shape it will automatically accommodate The other arm of the itself to varying strengths of battery without necessitating any change of adjustment. By having the armature pivoted in the frame accidental displacement is prevented, and it will be seen that the whole bell is exceedingly simple, durable, and may be cheaply produced.

A modification of the invention is shown in Fig. 3, in which a sheet-metal plate 1 forms the main frame, which is secured to the backing-plate2, having the gong or bell secured thereto. From the plate 1 angular ears 3 are bent upward, between which the armature is pivoted. A third ear 4 is also bent from the plate 2, in which is fitted an insulatingbushing 5, through which the contact-screw is threaded. The spring for returning the armature in this form is secured to the same near its pivotal point.

I claim as my invention-- 1. In an electric bell, a backingplate, an L- shaped frame having one arm secured to said plate and the other arm thereof extending at right angles to the face of said plate, magnets carried by the latter arm of said frame, an armature pivoted in an opening in the other arm under spring tension, a post extending in a plane substantially parallel with the armature and carrying a bell or gong, and a clapper carried by and forming an extension of the armature, substantially as described.

2. In an electric bell, an L-shaped frame, magnets carried by one arm thereof, an armature pivoted to the other arm, a spring carried bysaid armature and bearing against the end of the arm of the frame carrying the magnets, a bell or gong, and a clapper carried by said armature, substantially as described.

3. In combination, the L-shaped frame, the magnets carried by one arm thereof, the ar- 0 mature pivoted to the other arm, a contactpost also supported by said other arm, aspring secured to the free end of said armature having one end extended into line with said contact-post and its other end. bent at right angles and bearing against the first-named arm of the frame, a bell or gong and a clapper car ried by said armature and coacting therewith, substantially as described.

4c- In combination, a backing plate A, a

frame secured thereto, the magnets carried by the frame, a contact-screw also carried by said frame, a clapper, an armature pivoted to the frame extending across the magnets to one side of the same, an extension of said ar-v mature to the rear of its pivot, said extension extending through said backing-plate and carrying the clapper and a gong located on the opposite side of the plate to the frame adapted to have the clapper strike the under 10 side thereof, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

CHARLES H. FURGASON.

Witnesses:

ERIC PETERSON, ALFRED A. LORD. 

